Marxism began with the repudiation of philosophy, yet Marxists have often resorted to distinctively philosophical modes of reasoning. In recent years, Western Marxism has been more concerned with philosophy than with research or political activity, and in this book Callinicos explores the ambivalent relationship between Marxism and philosophy. Beginning with Marx and the legacy of Hegelianism, he surveys the schools of Marxist philosophy from Engels and the Second International through the revolutionary Hegelianism, of the 1920s, the Frankfurt School, and the anti-Hegelian Marxism of Adorno and Althusser.